ITEM NAME:Acrylic G1/4'' Threaded Semicircle Computer Water Cooling Flow Meter 2Ways#1 Description: - Name: Water-cooled flow meter - Thread size: G1/4 (2 points) The actual outer diameter size is 12.9MM - Material: Acrylic - Surface treatment: Polishing - Role: Observe the flow of water, etc. Package Included: 1x Water Cooling Flow Meter.Material: Acrylic. - Role: Observe the flow of water, etc.